Hi, in my previous post I had some problems installing Ubuntu 14.04 alongside my windows 8.1 operating system in UEFI mode, but finally i made it! Everything was going on well until I faund out tha t there was a problem with my wireless connection. It wasn't from my router, at least I was ure because it was running ok with Windows. So my guess went to the drivers that Ubuntu was using. The wireless card in my computer and also some Lenovo G50 laptops was a Realtek RTL8723BE.
For a start lets try to modify the configuration file of the card by typing the following line in Terminal:
sudo nano /etc/modprobe.d/rtl8723be.conf
Copy and paste this line and save the file by exiting. Press when finished Ctrl+X and enter to finish. Then reboot your system... this mod didin't work for me but some have reported that it worked for them!
options rtl8723be fwlps=N ips=N swenc=Y
If your connection is unstable or losing connection again, then open the terminal with Ctrl+Alt+T and type the commands below and then reboot your system. This solution worked for me, hope these commands help you fix your problem:
sudo apt-get install linux-headers-generic build-essential git git clone https://github.com/lwfinger/rtl8723be/cd rtl8723be makemake installsudo modprobe rtl8723be
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